| /* |
| * Copyright (C) 2018 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| #define ATRACE_TAG (ATRACE_TAG_THERMAL | ATRACE_TAG_HAL) |
| |
| #include "thermal-helper.h" |
| |
| #include <android-base/file.h> |
| #include <android-base/logging.h> |
| #include <android-base/properties.h> |
| #include <android-base/stringprintf.h> |
| #include <android-base/strings.h> |
| #include <utils/Trace.h> |
| |
| #include <iterator> |
| #include <set> |
| #include <sstream> |
| #include <thread> |
| #include <vector> |
| |
| namespace android { |
| namespace hardware { |
| namespace thermal { |
| namespace V2_0 { |
| namespace implementation { |
| |
| constexpr std::string_view kCpuOnlineRoot("/sys/devices/system/cpu"); |
| constexpr std::string_view kThermalSensorsRoot("/sys/devices/virtual/thermal"); |
| constexpr std::string_view kCpuUsageFile("/proc/stat"); |
| constexpr std::string_view kCpuOnlineFileSuffix("online"); |
| constexpr std::string_view kCpuPresentFile("/sys/devices/system/cpu/present"); |
| constexpr std::string_view kSensorPrefix("thermal_zone"); |
| constexpr std::string_view kCoolingDevicePrefix("cooling_device"); |
| constexpr std::string_view kThermalNameFile("type"); |
| constexpr std::string_view kSensorPolicyFile("policy"); |
| constexpr std::string_view kSensorTempSuffix("temp"); |
| constexpr std::string_view kSensorTripPointTempZeroFile("trip_point_0_temp"); |
| constexpr std::string_view kSensorTripPointHystZeroFile("trip_point_0_hyst"); |
| constexpr std::string_view kUserSpaceSuffix("user_space"); |
| constexpr std::string_view kCoolingDeviceCurStateSuffix("cur_state"); |
| constexpr std::string_view kCoolingDeviceMaxStateSuffix("max_state"); |
| constexpr std::string_view kCoolingDeviceState2powerSuffix("state2power_table"); |
| constexpr std::string_view kConfigProperty("vendor.thermal.config"); |
| constexpr std::string_view kConfigDefaultFileName("thermal_info_config.json"); |
| constexpr std::string_view kThermalGenlProperty("persist.vendor.enable.thermal.genl"); |
| constexpr std::string_view kThermalDisabledProperty("vendor.disable.thermal.control"); |
| |
| namespace { |
| using android::base::StringPrintf; |
| |
| /* |
| * Pixel don't offline CPU, so std::thread::hardware_concurrency(); should work. |
| * However /sys/devices/system/cpu/present is preferred. |
| * The file is expected to contain single text line with two numbers %d-%d, |
| * which is a range of available cpu numbers, e.g. 0-7 would mean there |
| * are 8 cores number from 0 to 7. |
| * For Android systems this approach is safer than using cpufeatures, see bug |
| * b/36941727. |
| */ |
| static int getNumberOfCores() { |
| std::string file; |
| if (!android::base::ReadFileToString(kCpuPresentFile.data(), &file)) { |
| LOG(ERROR) << "Error reading CPU present file: " << kCpuPresentFile; |
| return 0; |
| } |
| std::vector<std::string> pieces = android::base::Split(file, "-"); |
| if (pieces.size() != 2) { |
| LOG(ERROR) << "Error parsing CPU present file content: " << file; |
| return 0; |
| } |
| auto min_core = std::stoul(pieces[0]); |
| auto max_core = std::stoul(pieces[1]); |
| if (max_core < min_core) { |
| LOG(ERROR) << "Error parsing CPU present min and max: " << min_core << " - " << max_core; |
| return 0; |
| } |
| return static_cast<std::size_t>(max_core - min_core + 1); |
| } |
| const int kMaxCpus = getNumberOfCores(); |
| |
| void parseCpuUsagesFileAndAssignUsages(hidl_vec<CpuUsage> *cpu_usages) { |
| std::string data; |
| if (!android::base::ReadFileToString(kCpuUsageFile.data(), &data)) { |
| LOG(ERROR) << "Error reading CPU usage file: " << kCpuUsageFile; |
| return; |
| } |
| |
| std::istringstream stat_data(data); |
| std::string line; |
| while (std::getline(stat_data, line)) { |
| if (!line.find("cpu") && isdigit(line[3])) { |
| // Split the string using spaces. |
| std::vector<std::string> words = android::base::Split(line, " "); |
| std::string cpu_name = words[0]; |
| int cpu_num = std::stoi(cpu_name.substr(3)); |
| |
| if (cpu_num < kMaxCpus) { |
| uint64_t user = std::stoull(words[1]); |
| uint64_t nice = std::stoull(words[2]); |
| uint64_t system = std::stoull(words[3]); |
| uint64_t idle = std::stoull(words[4]); |
| |
| // Check if the CPU is online by reading the online file. |
| std::string cpu_online_path = |
| StringPrintf("%s/%s/%s", kCpuOnlineRoot.data(), cpu_name.c_str(), |
| kCpuOnlineFileSuffix.data()); |
| std::string is_online; |
| if (!android::base::ReadFileToString(cpu_online_path, &is_online)) { |
| LOG(ERROR) << "Could not open CPU online file: " << cpu_online_path; |
| if (cpu_num != 0) { |
| return; |
| } |
| // Some architecture cannot offline cpu0, so assuming it is online |
| is_online = "1"; |
| } |
| is_online = android::base::Trim(is_online); |
| |
| (*cpu_usages)[cpu_num].active = user + nice + system; |
| (*cpu_usages)[cpu_num].total = user + nice + system + idle; |
| (*cpu_usages)[cpu_num].isOnline = (is_online == "1") ? true : false; |
| } else { |
| LOG(ERROR) << "Unexpected CPU number: " << words[0]; |
| return; |
| } |
| } |
| } |
| } |
| |
| std::unordered_map<std::string, std::string> parseThermalPathMap(std::string_view prefix) { |
| std::unordered_map<std::string, std::string> path_map; |
| std::unique_ptr<DIR, int (*)(DIR *)> dir(opendir(kThermalSensorsRoot.data()), closedir); |
| if (!dir) { |
| return path_map; |
| } |
| |
| // std::filesystem is not available for vendor yet |
| // see discussion: aosp/894015 |
| while (struct dirent *dp = readdir(dir.get())) { |
| if (dp->d_type != DT_DIR) { |
| continue; |
| } |
| |
| if (!android::base::StartsWith(dp->d_name, prefix.data())) { |
| continue; |
| } |
| |
| std::string path = android::base::StringPrintf("%s/%s/%s", kThermalSensorsRoot.data(), |
| dp->d_name, kThermalNameFile.data()); |
| std::string name; |
| if (!android::base::ReadFileToString(path, &name)) { |
| PLOG(ERROR) << "Failed to read from " << path; |
| continue; |
| } |
| |
| path_map.emplace( |
| android::base::Trim(name), |
| android::base::StringPrintf("%s/%s", kThermalSensorsRoot.data(), dp->d_name)); |
| } |
| |
| return path_map; |
| } |
| |
| } // namespace |
| |
| /* |
| * Populate the sensor_name_to_file_map_ map by walking through the file tree, |
| * reading the type file and assigning the temp file path to the map. If we do |
| * not succeed, abort. |
| */ |
| ThermalHelper::ThermalHelper(const NotificationCallback &cb) |
| : thermal_watcher_(new ThermalWatcher( |
| std::bind(&ThermalHelper::thermalWatcherCallbackFunc, this, std::placeholders::_1))), |
| cb_(cb) { |
| const std::string config_path = |
| "/vendor/etc/" + |
| android::base::GetProperty(kConfigProperty.data(), kConfigDefaultFileName.data()); |
| bool thermal_throttling_disabled = |
| android::base::GetBoolProperty(kThermalDisabledProperty.data(), false); |
| |
| is_initialized_ = ParseCoolingDevice(config_path, &cooling_device_info_map_) && |
| ParseSensorInfo(config_path, &sensor_info_map_); |
| |
| if (thermal_throttling_disabled) { |
| return; |
| } |
| |
| if (!is_initialized_) { |
| LOG(FATAL) << "Failed to parse thermal configs"; |
| } |
| |
| auto tz_map = parseThermalPathMap(kSensorPrefix.data()); |
| auto cdev_map = parseThermalPathMap(kCoolingDevicePrefix.data()); |
| |
| is_initialized_ = initializeSensorMap(tz_map) && initializeCoolingDevices(cdev_map); |
| |
| if (!is_initialized_) { |
| LOG(FATAL) << "ThermalHAL could not be initialized properly."; |
| } |
| |
| if (!power_files_.registerPowerRailsToWatch(config_path)) { |
| LOG(FATAL) << "Failed to register power rails"; |
| } |
| |
| for (auto const &name_status_pair : sensor_info_map_) { |
| sensor_status_map_[name_status_pair.first] = { |
| .severity = ThrottlingSeverity::NONE, |
| .prev_hot_severity = ThrottlingSeverity::NONE, |
| .prev_cold_severity = ThrottlingSeverity::NONE, |
| .prev_hint_severity = ThrottlingSeverity::NONE, |
| .last_update_time = boot_clock::time_point::min(), |
| .thermal_cached = {NAN, boot_clock::time_point::min()}, |
| }; |
| |
| if (name_status_pair.second.throttling_info != nullptr) { |
| if (!thermal_throttling_.registerThermalThrottling( |
| name_status_pair.first, name_status_pair.second.throttling_info, |
| cooling_device_info_map_)) { |
| LOG(FATAL) << name_status_pair.first << " failed to register thermal throttling"; |
| } |
| } |
| |
| // Update cooling device max state |
| for (auto &binded_cdev_info_pair : |
| name_status_pair.second.throttling_info->binded_cdev_info_map) { |
| const auto &cdev_info = cooling_device_info_map_.at(binded_cdev_info_pair.first); |
| |
| for (auto &cdev_ceiling : binded_cdev_info_pair.second.cdev_ceiling) { |
| if (cdev_ceiling > cdev_info.max_state) { |
| if (cdev_ceiling != std::numeric_limits<int>::max()) { |
| LOG(ERROR) |
| << "Sensor " << name_status_pair.first << "'s " |
| << binded_cdev_info_pair.first << " cdev_ceiling:" << cdev_ceiling |
| << " is higher than max state:" << cdev_info.max_state; |
| } |
| cdev_ceiling = cdev_info.max_state; |
| } |
| } |
| } |
| |
| if (name_status_pair.second.virtual_sensor_info != nullptr && |
| !name_status_pair.second.virtual_sensor_info->trigger_sensor.empty() && |
| name_status_pair.second.is_watch) { |
| if (sensor_info_map_.count( |
| name_status_pair.second.virtual_sensor_info->trigger_sensor)) { |
| sensor_info_map_[name_status_pair.second.virtual_sensor_info->trigger_sensor] |
| .is_watch = true; |
| } else { |
| LOG(FATAL) << name_status_pair.first << "'s trigger sensor: " |
| << name_status_pair.second.virtual_sensor_info->trigger_sensor |
| << " is invalid"; |
| } |
| } |
| } |
| |
| const bool thermal_genl_enabled = |
| android::base::GetBoolProperty(kThermalGenlProperty.data(), false); |
| |
| std::set<std::string> monitored_sensors; |
| initializeTrip(tz_map, &monitored_sensors, thermal_genl_enabled); |
| |
| if (thermal_genl_enabled) { |
| thermal_watcher_->registerFilesToWatchNl(monitored_sensors); |
| } else { |
| thermal_watcher_->registerFilesToWatch(monitored_sensors); |
| } |
| |
| // Need start watching after status map initialized |
| is_initialized_ = thermal_watcher_->startWatchingDeviceFiles(); |
| if (!is_initialized_) { |
| LOG(FATAL) << "ThermalHAL could not start watching thread properly."; |
| } |
| |
| if (!connectToPowerHal()) { |
| LOG(ERROR) << "Fail to connect to Power Hal"; |
| } else { |
| updateSupportedPowerHints(); |
| } |
| } |
| |
| bool getThermalZoneTypeById(int tz_id, std::string *type) { |
| std::string tz_type; |
| std::string path = |
| android::base::StringPrintf("%s/%s%d/%s", kThermalSensorsRoot.data(), |
| kSensorPrefix.data(), tz_id, kThermalNameFile.data()); |
| LOG(INFO) << "TZ Path: " << path; |
| if (!::android::base::ReadFileToString(path, &tz_type)) { |
| LOG(ERROR) << "Failed to read sensor: " << tz_type; |
| return false; |
| } |
| |
| // Strip the newline. |
| *type = ::android::base::Trim(tz_type); |
| LOG(INFO) << "TZ type: " << *type; |
| return true; |
| } |
| |
| bool ThermalHelper::readCoolingDevice(std::string_view cooling_device, |
| CoolingDevice_2_0 *out) const { |
| // Read the file. If the file can't be read temp will be empty string. |
| std::string data; |
| |
| if (!cooling_devices_.readThermalFile(cooling_device, &data)) { |
| LOG(ERROR) << "readCoolingDevice: failed to read cooling_device: " << cooling_device; |
| return false; |
| } |
| |
| const CdevInfo &cdev_info = cooling_device_info_map_.at(cooling_device.data()); |
| const CoolingType &type = cdev_info.type; |
| |
| out->type = type; |
| out->name = cooling_device.data(); |
| out->value = std::stoi(data); |
| |
| return true; |
| } |
| |
| bool ThermalHelper::readTemperature(std::string_view sensor_name, Temperature_1_0 *out) { |
| // Return fail if the thermal sensor cannot be read. |
| float temp; |
| if (!readThermalSensor(sensor_name, &temp, false)) { |
| LOG(ERROR) << "readTemperature: failed to read sensor: " << sensor_name; |
| return false; |
| } |
| |
| const SensorInfo &sensor_info = sensor_info_map_.at(sensor_name.data()); |
| TemperatureType_1_0 type = |
| (static_cast<int>(sensor_info.type) > static_cast<int>(TemperatureType_1_0::SKIN)) |
| ? TemperatureType_1_0::UNKNOWN |
| : static_cast<TemperatureType_1_0>(sensor_info.type); |
| out->type = type; |
| out->name = sensor_name.data(); |
| out->currentValue = temp * sensor_info.multiplier; |
| out->throttlingThreshold = |
| sensor_info.hot_thresholds[static_cast<size_t>(ThrottlingSeverity::SEVERE)]; |
| out->shutdownThreshold = |
| sensor_info.hot_thresholds[static_cast<size_t>(ThrottlingSeverity::SHUTDOWN)]; |
| out->vrThrottlingThreshold = sensor_info.vr_threshold; |
| |
| return true; |
| } |
| |
| bool ThermalHelper::readTemperature( |
| std::string_view sensor_name, Temperature_2_0 *out, |
| std::pair<ThrottlingSeverity, ThrottlingSeverity> *throtting_status, |
| const bool force_sysfs) { |
| // Return fail if the thermal sensor cannot be read. |
| float temp; |
| |
| if (!readThermalSensor(sensor_name, &temp, force_sysfs)) { |
| LOG(ERROR) << "readTemperature: failed to read sensor: " << sensor_name; |
| return false; |
| } |
| |
| const auto &sensor_info = sensor_info_map_.at(sensor_name.data()); |
| out->type = sensor_info.type; |
| out->name = sensor_name.data(); |
| out->value = temp * sensor_info.multiplier; |
| |
| std::pair<ThrottlingSeverity, ThrottlingSeverity> status = |
| std::make_pair(ThrottlingSeverity::NONE, ThrottlingSeverity::NONE); |
| // Only update status if the thermal sensor is being monitored |
| if (sensor_info.is_watch) { |
| ThrottlingSeverity prev_hot_severity, prev_cold_severity; |
| { |
| // reader lock, readTemperature will be called in Binder call and the watcher thread. |
| std::shared_lock<std::shared_mutex> _lock(sensor_status_map_mutex_); |
| prev_hot_severity = sensor_status_map_.at(sensor_name.data()).prev_hot_severity; |
| prev_cold_severity = sensor_status_map_.at(sensor_name.data()).prev_cold_severity; |
| } |
| status = getSeverityFromThresholds(sensor_info.hot_thresholds, sensor_info.cold_thresholds, |
| sensor_info.hot_hysteresis, sensor_info.cold_hysteresis, |
| prev_hot_severity, prev_cold_severity, out->value); |
| } |
| if (throtting_status) { |
| *throtting_status = status; |
| } |
| |
| out->throttlingStatus = static_cast<size_t>(status.first) > static_cast<size_t>(status.second) |
| ? status.first |
| : status.second; |
| |
| return true; |
| } |
| |
| bool ThermalHelper::readTemperatureThreshold(std::string_view sensor_name, |
| TemperatureThreshold *out) const { |
| // Read the file. If the file can't be read temp will be empty string. |
| std::string temp; |
| std::string path; |
| |
| if (!sensor_info_map_.count(sensor_name.data())) { |
| LOG(ERROR) << __func__ << ": sensor not found: " << sensor_name; |
| return false; |
| } |
| |
| const auto &sensor_info = sensor_info_map_.at(sensor_name.data()); |
| |
| out->type = sensor_info.type; |
| out->name = sensor_name.data(); |
| out->hotThrottlingThresholds = sensor_info.hot_thresholds; |
| out->coldThrottlingThresholds = sensor_info.cold_thresholds; |
| out->vrThrottlingThreshold = sensor_info.vr_threshold; |
| return true; |
| } |
| |
| void ThermalHelper::updateCoolingDevices(const std::vector<std::string> &updated_cdev) { |
| int max_state; |
| |
| const auto &thermal_throttling_status_map = thermal_throttling_.GetThermalThrottlingStatusMap(); |
| |
| for (const auto &target_cdev : updated_cdev) { |
| max_state = 0; |
| for (const auto &thermal_throttling_status_pair : thermal_throttling_status_map) { |
| if (!thermal_throttling_status_pair.second.cdev_status_map.count(target_cdev)) { |
| continue; |
| } |
| const auto state = |
| thermal_throttling_status_pair.second.cdev_status_map.at(target_cdev); |
| if (state > max_state) { |
| max_state = state; |
| } |
| } |
| if (cooling_devices_.writeCdevFile(target_cdev, std::to_string(max_state))) { |
| LOG(INFO) << "Successfully update cdev " << target_cdev << " sysfs to " << max_state; |
| } else { |
| LOG(ERROR) << "Failed to update cdev " << target_cdev << " sysfs to " << max_state; |
| } |
| } |
| } |
| |
| std::pair<ThrottlingSeverity, ThrottlingSeverity> ThermalHelper::getSeverityFromThresholds( |
| const ThrottlingArray &hot_thresholds, const ThrottlingArray &cold_thresholds, |
| const ThrottlingArray &hot_hysteresis, const ThrottlingArray &cold_hysteresis, |
| ThrottlingSeverity prev_hot_severity, ThrottlingSeverity prev_cold_severity, |
| float value) const { |
| ThrottlingSeverity ret_hot = ThrottlingSeverity::NONE; |
| ThrottlingSeverity ret_hot_hysteresis = ThrottlingSeverity::NONE; |
| ThrottlingSeverity ret_cold = ThrottlingSeverity::NONE; |
| ThrottlingSeverity ret_cold_hysteresis = ThrottlingSeverity::NONE; |
| |
| // Here we want to control the iteration from high to low, and hidl_enum_range doesn't support |
| // a reverse iterator yet. |
| for (size_t i = static_cast<size_t>(ThrottlingSeverity::SHUTDOWN); |
| i > static_cast<size_t>(ThrottlingSeverity::NONE); --i) { |
| if (!std::isnan(hot_thresholds[i]) && hot_thresholds[i] <= value && |
| ret_hot == ThrottlingSeverity::NONE) { |
| ret_hot = static_cast<ThrottlingSeverity>(i); |
| } |
| if (!std::isnan(hot_thresholds[i]) && (hot_thresholds[i] - hot_hysteresis[i]) < value && |
| ret_hot_hysteresis == ThrottlingSeverity::NONE) { |
| ret_hot_hysteresis = static_cast<ThrottlingSeverity>(i); |
| } |
| if (!std::isnan(cold_thresholds[i]) && cold_thresholds[i] >= value && |
| ret_cold == ThrottlingSeverity::NONE) { |
| ret_cold = static_cast<ThrottlingSeverity>(i); |
| } |
| if (!std::isnan(cold_thresholds[i]) && (cold_thresholds[i] + cold_hysteresis[i]) > value && |
| ret_cold_hysteresis == ThrottlingSeverity::NONE) { |
| ret_cold_hysteresis = static_cast<ThrottlingSeverity>(i); |
| } |
| } |
| if (static_cast<size_t>(ret_hot) < static_cast<size_t>(prev_hot_severity)) { |
| ret_hot = ret_hot_hysteresis; |
| } |
| if (static_cast<size_t>(ret_cold) < static_cast<size_t>(prev_cold_severity)) { |
| ret_cold = ret_cold_hysteresis; |
| } |
| |
| return std::make_pair(ret_hot, ret_cold); |
| } |
| |
| bool ThermalHelper::initializeSensorMap( |
| const std::unordered_map<std::string, std::string> &path_map) { |
| for (const auto &sensor_info_pair : sensor_info_map_) { |
| std::string_view sensor_name = sensor_info_pair.first; |
| if (sensor_info_pair.second.virtual_sensor_info != nullptr) { |
| continue; |
| } |
| if (!path_map.count(sensor_name.data())) { |
| LOG(ERROR) << "Could not find " << sensor_name << " in sysfs"; |
| return false; |
| } |
| |
| std::string path; |
| if (sensor_info_pair.second.temp_path.empty()) { |
| path = android::base::StringPrintf("%s/%s", path_map.at(sensor_name.data()).c_str(), |
| kSensorTempSuffix.data()); |
| } else { |
| path = sensor_info_pair.second.temp_path; |
| } |
| |
| if (!thermal_sensors_.addThermalFile(sensor_name, path)) { |
| LOG(ERROR) << "Could not add " << sensor_name << "to sensors map"; |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| bool ThermalHelper::initializeCoolingDevices( |
| const std::unordered_map<std::string, std::string> &path_map) { |
| for (auto &cooling_device_info_pair : cooling_device_info_map_) { |
| std::string cooling_device_name = cooling_device_info_pair.first; |
| if (!path_map.count(cooling_device_name)) { |
| LOG(ERROR) << "Could not find " << cooling_device_name << " in sysfs"; |
| return false; |
| } |
| // Add cooling device path for thermalHAL to get current state |
| std::string_view path = path_map.at(cooling_device_name); |
| std::string read_path; |
| if (!cooling_device_info_pair.second.read_path.empty()) { |
| read_path = cooling_device_info_pair.second.read_path.data(); |
| } else { |
| read_path = android::base::StringPrintf("%s/%s", path.data(), |
| kCoolingDeviceCurStateSuffix.data()); |
| } |
| if (!cooling_devices_.addThermalFile(cooling_device_name, read_path)) { |
| LOG(ERROR) << "Could not add " << cooling_device_name |
| << " read path to cooling device map"; |
| return false; |
| } |
| |
| std::string state2power_path = android::base::StringPrintf( |
| "%s/%s", path.data(), kCoolingDeviceState2powerSuffix.data()); |
| std::string state2power_str; |
| if (android::base::ReadFileToString(state2power_path, &state2power_str)) { |
| LOG(INFO) << "Cooling device " << cooling_device_info_pair.first |
| << " use state2power read from sysfs"; |
| cooling_device_info_pair.second.state2power.clear(); |
| |
| std::stringstream power(state2power_str); |
| unsigned int power_number; |
| int i = 0; |
| while (power >> power_number) { |
| cooling_device_info_pair.second.state2power.push_back( |
| static_cast<float>(power_number)); |
| LOG(INFO) << "Cooling device " << cooling_device_info_pair.first << " state:" << i |
| << " power: " << power_number; |
| i++; |
| } |
| } |
| |
| // Get max cooling device request state |
| std::string max_state; |
| std::string max_state_path = android::base::StringPrintf( |
| "%s/%s", path.data(), kCoolingDeviceMaxStateSuffix.data()); |
| if (!android::base::ReadFileToString(max_state_path, &max_state)) { |
| LOG(ERROR) << cooling_device_info_pair.first |
| << " could not open max state file:" << max_state_path; |
| cooling_device_info_pair.second.max_state = std::numeric_limits<int>::max(); |
| } else { |
| cooling_device_info_pair.second.max_state = std::stoi(android::base::Trim(max_state)); |
| LOG(INFO) << "Cooling device " << cooling_device_info_pair.first |
| << " max state: " << cooling_device_info_pair.second.max_state |
| << " state2power number: " |
| << cooling_device_info_pair.second.state2power.size(); |
| if (cooling_device_info_pair.second.state2power.size() > 0 && |
| static_cast<int>(cooling_device_info_pair.second.state2power.size()) != |
| (cooling_device_info_pair.second.max_state + 1)) { |
| LOG(ERROR) << "Invalid state2power number: " |
| << cooling_device_info_pair.second.state2power.size() |
| << ", number should be " << cooling_device_info_pair.second.max_state + 1 |
| << " (max_state + 1)"; |
| return false; |
| } |
| } |
| |
| // Add cooling device path for thermalHAL to request state |
| cooling_device_name = |
| android::base::StringPrintf("%s_%s", cooling_device_name.c_str(), "w"); |
| std::string write_path; |
| if (!cooling_device_info_pair.second.write_path.empty()) { |
| write_path = cooling_device_info_pair.second.write_path.data(); |
| } else { |
| write_path = android::base::StringPrintf("%s/%s", path.data(), |
| kCoolingDeviceCurStateSuffix.data()); |
| } |
| |
| if (!cooling_devices_.addThermalFile(cooling_device_name, write_path)) { |
| LOG(ERROR) << "Could not add " << cooling_device_name |
| << " write path to cooling device map"; |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| void ThermalHelper::setMinTimeout(SensorInfo *sensor_info) { |
| sensor_info->polling_delay = kMinPollIntervalMs; |
| sensor_info->passive_delay = kMinPollIntervalMs; |
| } |
| |
| void ThermalHelper::initializeTrip(const std::unordered_map<std::string, std::string> &path_map, |
| std::set<std::string> *monitored_sensors, |
| bool thermal_genl_enabled) { |
| for (auto &sensor_info : sensor_info_map_) { |
| if (!sensor_info.second.is_watch || (sensor_info.second.virtual_sensor_info != nullptr)) { |
| continue; |
| } |
| |
| bool trip_update = false; |
| std::string_view sensor_name = sensor_info.first; |
| std::string_view tz_path = path_map.at(sensor_name.data()); |
| std::string tz_policy; |
| std::string path = |
| android::base::StringPrintf("%s/%s", (tz_path.data()), kSensorPolicyFile.data()); |
| |
| if (thermal_genl_enabled) { |
| trip_update = true; |
| } else { |
| // Check if thermal zone support uevent notify |
| if (!android::base::ReadFileToString(path, &tz_policy)) { |
| LOG(ERROR) << sensor_name << " could not open tz policy file:" << path; |
| } else { |
| tz_policy = android::base::Trim(tz_policy); |
| if (tz_policy != kUserSpaceSuffix) { |
| LOG(ERROR) << sensor_name << " does not support uevent notify"; |
| } else { |
| trip_update = true; |
| } |
| } |
| } |
| if (trip_update) { |
| // Update thermal zone trip point |
| for (size_t i = 0; i < kThrottlingSeverityCount; ++i) { |
| if (!std::isnan(sensor_info.second.hot_thresholds[i]) && |
| !std::isnan(sensor_info.second.hot_hysteresis[i])) { |
| // Update trip_point_0_temp threshold |
| std::string threshold = std::to_string(static_cast<int>( |
| sensor_info.second.hot_thresholds[i] / sensor_info.second.multiplier)); |
| path = android::base::StringPrintf("%s/%s", (tz_path.data()), |
| kSensorTripPointTempZeroFile.data()); |
| if (!android::base::WriteStringToFile(threshold, path)) { |
| LOG(ERROR) << "fail to update " << sensor_name << " trip point: " << path |
| << " to " << threshold; |
| trip_update = false; |
| break; |
| } |
| // Update trip_point_0_hyst threshold |
| threshold = std::to_string(static_cast<int>( |
| sensor_info.second.hot_hysteresis[i] / sensor_info.second.multiplier)); |
| path = android::base::StringPrintf("%s/%s", (tz_path.data()), |
| kSensorTripPointHystZeroFile.data()); |
| if (!android::base::WriteStringToFile(threshold, path)) { |
| LOG(ERROR) << "fail to update " << sensor_name << "trip hyst" << threshold |
| << path; |
| trip_update = false; |
| break; |
| } |
| break; |
| } else if (i == kThrottlingSeverityCount - 1) { |
| LOG(ERROR) << sensor_name << ":all thresholds are NAN"; |
| trip_update = false; |
| break; |
| } |
| } |
| monitored_sensors->insert(sensor_info.first); |
| } |
| |
| if (!trip_update) { |
| LOG(INFO) << "config Sensor: " << sensor_info.first |
| << " to default polling interval: " << kMinPollIntervalMs.count(); |
| setMinTimeout(&sensor_info.second); |
| } |
| } |
| } |
| |
| bool ThermalHelper::fillTemperatures(hidl_vec<Temperature_1_0> *temperatures) { |
| std::vector<Temperature_1_0> ret; |
| for (const auto &name_info_pair : sensor_info_map_) { |
| Temperature_1_0 temp; |
| |
| if (name_info_pair.second.is_hidden) { |
| continue; |
| } |
| |
| if (readTemperature(name_info_pair.first, &temp)) { |
| ret.emplace_back(std::move(temp)); |
| } else { |
| LOG(ERROR) << __func__ |
| << ": error reading temperature for sensor: " << name_info_pair.first; |
| return false; |
| } |
| } |
| *temperatures = ret; |
| return ret.size() > 0; |
| } |
| |
| bool ThermalHelper::fillCurrentTemperatures(bool filterType, bool filterCallback, |
| TemperatureType_2_0 type, |
| hidl_vec<Temperature_2_0> *temperatures) { |
| std::vector<Temperature_2_0> ret; |
| for (const auto &name_info_pair : sensor_info_map_) { |
| Temperature_2_0 temp; |
| if (name_info_pair.second.is_hidden) { |
| continue; |
| } |
| if (filterType && name_info_pair.second.type != type) { |
| continue; |
| } |
| if (filterCallback && !name_info_pair.second.send_cb) { |
| continue; |
| } |
| if (readTemperature(name_info_pair.first, &temp, nullptr, false)) { |
| ret.emplace_back(std::move(temp)); |
| } else { |
| LOG(ERROR) << __func__ |
| << ": error reading temperature for sensor: " << name_info_pair.first; |
| } |
| } |
| *temperatures = ret; |
| return ret.size() > 0; |
| } |
| |
| bool ThermalHelper::fillTemperatureThresholds(bool filterType, TemperatureType_2_0 type, |
| hidl_vec<TemperatureThreshold> *thresholds) const { |
| std::vector<TemperatureThreshold> ret; |
| for (const auto &name_info_pair : sensor_info_map_) { |
| TemperatureThreshold temp; |
| if (name_info_pair.second.is_hidden) { |
| continue; |
| } |
| if (filterType && name_info_pair.second.type != type) { |
| continue; |
| } |
| if (readTemperatureThreshold(name_info_pair.first, &temp)) { |
| ret.emplace_back(std::move(temp)); |
| } else { |
| LOG(ERROR) << __func__ << ": error reading temperature threshold for sensor: " |
| << name_info_pair.first; |
| return false; |
| } |
| } |
| *thresholds = ret; |
| return ret.size() > 0; |
| } |
| |
| bool ThermalHelper::fillCurrentCoolingDevices(bool filterType, CoolingType type, |
| hidl_vec<CoolingDevice_2_0> *cooling_devices) const { |
| std::vector<CoolingDevice_2_0> ret; |
| for (const auto &name_info_pair : cooling_device_info_map_) { |
| CoolingDevice_2_0 value; |
| if (filterType && name_info_pair.second.type != type) { |
| continue; |
| } |
| if (readCoolingDevice(name_info_pair.first, &value)) { |
| ret.emplace_back(std::move(value)); |
| } else { |
| LOG(ERROR) << __func__ << ": error reading cooling device: " << name_info_pair.first; |
| return false; |
| } |
| } |
| *cooling_devices = ret; |
| return ret.size() > 0; |
| } |
| |
| bool ThermalHelper::fillCpuUsages(hidl_vec<CpuUsage> *cpu_usages) const { |
| cpu_usages->resize(kMaxCpus); |
| for (int i = 0; i < kMaxCpus; i++) { |
| (*cpu_usages)[i].name = StringPrintf("cpu%d", i); |
| (*cpu_usages)[i].active = 0; |
| (*cpu_usages)[i].total = 0; |
| (*cpu_usages)[i].isOnline = false; |
| } |
| parseCpuUsagesFileAndAssignUsages(cpu_usages); |
| return true; |
| } |
| |
| bool ThermalHelper::readThermalSensor(std::string_view sensor_name, float *temp, |
| const bool force_sysfs) { |
| float temp_val = 0.0; |
| std::string file_reading; |
| std::string log_buf; |
| boot_clock::time_point now = boot_clock::now(); |
| |
| ATRACE_NAME(StringPrintf("ThermalHelper::readThermalSensor - %s", sensor_name.data()).c_str()); |
| if (!(sensor_info_map_.count(sensor_name.data()) && |
| sensor_status_map_.count(sensor_name.data()))) { |
| return false; |
| } |
| |
| const auto &sensor_info = sensor_info_map_.at(sensor_name.data()); |
| auto &sensor_status = sensor_status_map_.at(sensor_name.data()); |
| |
| // Check if thermal data need to be read from buffer |
| if (!force_sysfs && (sensor_status.thermal_cached.timestamp != boot_clock::time_point::min()) && |
| (std::chrono::duration_cast<std::chrono::milliseconds>( |
| now - sensor_status.thermal_cached.timestamp) < sensor_info.time_resolution) && |
| !isnan(sensor_status.thermal_cached.temp)) { |
| *temp = sensor_status.thermal_cached.temp; |
| LOG(VERBOSE) << "read " << sensor_name.data() << " from buffer, value:" << *temp; |
| return true; |
| } |
| |
| // Reading thermal sensor according to it's composition |
| if (sensor_info.virtual_sensor_info == nullptr) { |
| if (!thermal_sensors_.readThermalFile(sensor_name.data(), &file_reading)) { |
| return false; |
| } |
| |
| if (file_reading.empty()) { |
| LOG(ERROR) << "failed to read sensor: " << sensor_name; |
| return false; |
| } |
| *temp = std::stof(::android::base::Trim(file_reading)); |
| } else { |
| for (size_t i = 0; i < sensor_info.virtual_sensor_info->linked_sensors.size(); i++) { |
| float sensor_reading = 0.0; |
| if (!readThermalSensor(sensor_info.virtual_sensor_info->linked_sensors[i], |
| &sensor_reading, force_sysfs)) { |
| return false; |
| } |
| log_buf.append(StringPrintf("(%s: %0.2f)", |
| sensor_info.virtual_sensor_info->linked_sensors[i].c_str(), |
| sensor_reading)); |
| if (std::isnan(sensor_info.virtual_sensor_info->coefficients[i])) { |
| return false; |
| } |
| |
| float coefficient = sensor_info.virtual_sensor_info->coefficients[i]; |
| switch (sensor_info.virtual_sensor_info->formula) { |
| case FormulaOption::COUNT_THRESHOLD: |
| if ((coefficient < 0 && sensor_reading < -coefficient) || |
| (coefficient >= 0 && sensor_reading >= coefficient)) |
| temp_val += 1; |
| break; |
| case FormulaOption::WEIGHTED_AVG: |
| temp_val += sensor_reading * coefficient; |
| break; |
| case FormulaOption::MAXIMUM: |
| if (i == 0) |
| temp_val = std::numeric_limits<float>::lowest(); |
| if (sensor_reading * coefficient > temp_val) |
| temp_val = sensor_reading * coefficient; |
| break; |
| case FormulaOption::MINIMUM: |
| if (i == 0) |
| temp_val = std::numeric_limits<float>::max(); |
| if (sensor_reading * coefficient < temp_val) |
| temp_val = sensor_reading * coefficient; |
| break; |
| default: |
| break; |
| } |
| } |
| LOG(VERBOSE) << sensor_name.data() << "'s sub sensors:" << log_buf; |
| *temp = (temp_val + sensor_info.virtual_sensor_info->offset); |
| } |
| |
| { |
| std::unique_lock<std::shared_mutex> _lock(sensor_status_map_mutex_); |
| sensor_status.thermal_cached.temp = *temp; |
| sensor_status.thermal_cached.timestamp = now; |
| } |
| |
| return true; |
| } |
| |
| // This is called in the different thread context and will update sensor_status |
| // uevent_sensors is the set of sensors which trigger uevent from thermal core driver. |
| std::chrono::milliseconds ThermalHelper::thermalWatcherCallbackFunc( |
| const std::set<std::string> &uevent_sensors) { |
| std::vector<Temperature_2_0> temps; |
| std::vector<std::string> cooling_devices_to_update; |
| boot_clock::time_point now = boot_clock::now(); |
| auto min_sleep_ms = std::chrono::milliseconds::max(); |
| bool power_data_is_updated = false; |
| |
| ATRACE_CALL(); |
| for (auto &name_status_pair : sensor_status_map_) { |
| bool force_update = false; |
| bool force_sysfs = false; |
| Temperature_2_0 temp; |
| TemperatureThreshold threshold; |
| SensorStatus &sensor_status = name_status_pair.second; |
| const SensorInfo &sensor_info = sensor_info_map_.at(name_status_pair.first); |
| |
| // Only handle the sensors in allow list |
| if (!sensor_info.is_watch) { |
| continue; |
| } |
| |
| ATRACE_NAME(StringPrintf("ThermalHelper::thermalWatcherCallbackFunc - %s", |
| name_status_pair.first.data()) |
| .c_str()); |
| |
| std::chrono::milliseconds time_elapsed_ms = std::chrono::milliseconds::zero(); |
| auto sleep_ms = (sensor_status.severity != ThrottlingSeverity::NONE) |
| ? sensor_info.passive_delay |
| : sensor_info.polling_delay; |
| |
| if (sensor_info.virtual_sensor_info != nullptr && |
| !sensor_info.virtual_sensor_info->trigger_sensor.empty()) { |
| const auto trigger_sensor_status = |
| sensor_status_map_.at(sensor_info.virtual_sensor_info->trigger_sensor); |
| if (trigger_sensor_status.severity != ThrottlingSeverity::NONE) { |
| sleep_ms = sensor_info.passive_delay; |
| } |
| } |
| // Check if the sensor need to be updated |
| if (sensor_status.last_update_time == boot_clock::time_point::min()) { |
| force_update = true; |
| LOG(VERBOSE) << "Force update " << name_status_pair.first |
| << "'s temperature after booting"; |
| } else { |
| time_elapsed_ms = std::chrono::duration_cast<std::chrono::milliseconds>( |
| now - sensor_status.last_update_time); |
| if (time_elapsed_ms > sleep_ms) { |
| // Update the sensor because sleep timeout |
| force_update = true; |
| } else if (uevent_sensors.size() && |
| uevent_sensors.find((sensor_info.virtual_sensor_info != nullptr) |
| ? sensor_info.virtual_sensor_info->trigger_sensor |
| : name_status_pair.first) != |
| uevent_sensors.end()) { |
| // Force update the sensor from sysfs |
| force_update = true; |
| force_sysfs = true; |
| } |
| } |
| |
| LOG(VERBOSE) << "sensor " << name_status_pair.first |
| << ": time_elpased=" << time_elapsed_ms.count() |
| << ", sleep_ms=" << sleep_ms.count() << ", force_update = " << force_update |
| << ", force_sysfs = " << force_sysfs; |
| |
| if (!force_update) { |
| auto timeout_remaining = sleep_ms - time_elapsed_ms; |
| if (min_sleep_ms > timeout_remaining) { |
| min_sleep_ms = timeout_remaining; |
| } |
| LOG(VERBOSE) << "sensor " << name_status_pair.first |
| << ": timeout_remaining=" << timeout_remaining.count(); |
| continue; |
| } |
| |
| std::pair<ThrottlingSeverity, ThrottlingSeverity> throtting_status; |
| if (!readTemperature(name_status_pair.first, &temp, &throtting_status, force_sysfs)) { |
| LOG(ERROR) << __func__ |
| << ": error reading temperature for sensor: " << name_status_pair.first; |
| continue; |
| } |
| if (!readTemperatureThreshold(name_status_pair.first, &threshold)) { |
| LOG(ERROR) << __func__ << ": error reading temperature threshold for sensor: " |
| << name_status_pair.first; |
| continue; |
| } |
| |
| { |
| // writer lock |
| std::unique_lock<std::shared_mutex> _lock(sensor_status_map_mutex_); |
| if (throtting_status.first != sensor_status.prev_hot_severity) { |
| sensor_status.prev_hot_severity = throtting_status.first; |
| } |
| if (throtting_status.second != sensor_status.prev_cold_severity) { |
| sensor_status.prev_cold_severity = throtting_status.second; |
| } |
| if (temp.throttlingStatus != sensor_status.severity) { |
| temps.push_back(temp); |
| sensor_status.severity = temp.throttlingStatus; |
| sleep_ms = (sensor_status.severity != ThrottlingSeverity::NONE) |
| ? sensor_info.passive_delay |
| : sensor_info.polling_delay; |
| } |
| } |
| |
| if (!power_data_is_updated) { |
| power_files_.refreshPowerStatus(); |
| power_data_is_updated = true; |
| } |
| |
| if (sensor_status.severity == ThrottlingSeverity::NONE) { |
| LOG(VERBOSE) << temp.name << ": " << temp.value; |
| thermal_throttling_.clearThrottlingData(name_status_pair.first, sensor_info); |
| } else { |
| LOG(INFO) << temp.name << ": " << temp.value; |
| // update thermal throttling request |
| thermal_throttling_.thermalThrottlingUpdate( |
| temp, sensor_info, sensor_status.severity, time_elapsed_ms, |
| power_files_.GetPowerStatusMap(), cooling_device_info_map_); |
| } |
| |
| thermal_throttling_.computeCoolingDevicesRequest(name_status_pair.first, sensor_info, |
| sensor_status.severity, |
| &cooling_devices_to_update); |
| if (min_sleep_ms > sleep_ms) { |
| min_sleep_ms = sleep_ms; |
| } |
| |
| LOG(VERBOSE) << "Sensor " << name_status_pair.first << ": sleep_ms=" << sleep_ms.count() |
| << ", min_sleep_ms voting result=" << min_sleep_ms.count(); |
| sensor_status.last_update_time = now; |
| } |
| |
| if (!cooling_devices_to_update.empty()) { |
| updateCoolingDevices(cooling_devices_to_update); |
| } |
| |
| if (!temps.empty()) { |
| for (const auto &t : temps) { |
| if (sensor_info_map_.at(t.name).send_cb && cb_) { |
| cb_(t); |
| } |
| |
| if (sensor_info_map_.at(t.name).send_powerhint && isAidlPowerHalExist()) { |
| sendPowerExtHint(t); |
| } |
| } |
| } |
| |
| return min_sleep_ms; |
| } |
| |
| bool ThermalHelper::connectToPowerHal() { |
| return power_hal_service_.connect(); |
| } |
| |
| void ThermalHelper::updateSupportedPowerHints() { |
| for (auto const &name_status_pair : sensor_info_map_) { |
| if (!(name_status_pair.second.send_powerhint)) { |
| continue; |
| } |
| ThrottlingSeverity current_severity = ThrottlingSeverity::NONE; |
| for (const auto &severity : hidl_enum_range<ThrottlingSeverity>()) { |
| if (severity == ThrottlingSeverity::NONE) { |
| supported_powerhint_map_[name_status_pair.first][ThrottlingSeverity::NONE] = |
| ThrottlingSeverity::NONE; |
| continue; |
| } |
| |
| bool isSupported = false; |
| ndk::ScopedAStatus isSupportedResult; |
| |
| if (power_hal_service_.isPowerHalExtConnected()) { |
| isSupported = power_hal_service_.isModeSupported(name_status_pair.first, severity); |
| } |
| if (isSupported) |
| current_severity = severity; |
| supported_powerhint_map_[name_status_pair.first][severity] = current_severity; |
| } |
| } |
| } |
| |
| void ThermalHelper::sendPowerExtHint(const Temperature_2_0 &t) { |
| ATRACE_CALL(); |
| std::lock_guard<std::shared_mutex> lock(sensor_status_map_mutex_); |
| ThrottlingSeverity prev_hint_severity; |
| prev_hint_severity = sensor_status_map_.at(t.name).prev_hint_severity; |
| ThrottlingSeverity current_hint_severity = supported_powerhint_map_[t.name][t.throttlingStatus]; |
| |
| if (prev_hint_severity == current_hint_severity) |
| return; |
| |
| if (prev_hint_severity != ThrottlingSeverity::NONE) { |
| power_hal_service_.setMode(t.name, prev_hint_severity, false); |
| } |
| |
| if (current_hint_severity != ThrottlingSeverity::NONE) { |
| power_hal_service_.setMode(t.name, current_hint_severity, true); |
| } |
| |
| sensor_status_map_[t.name].prev_hint_severity = current_hint_severity; |
| } |
| } // namespace implementation |
| } // namespace V2_0 |
| } // namespace thermal |
| } // namespace hardware |
| } // namespace android |